Optimization of hydrolysis condition of blood meal by Bacillus subtilis with response surface methodology

Enhancing hemoglobin peptide production from chicken blood fermentation by food‐grade nonionic surfactant

“…On the one hand, by‐products and bacteria autolysate accumulated along with the fermentation, which was contrary to A. niger growth. On the other hand, deficiency of essential nutrients is observed later during fermentation, which suppresses enzyme synthesis and secretion . Furthermore, ingestion of hydrolyzates by A. niger might also exist since slight downward trends appeared in both amino nitrogen and soluble nitrogen content in the anaphase.…”

“…Microbial transformation is a particularly attractive technique to treat hemoglobin for the dirt‐cheap costs, milder process conditions required, and the relative convenient reaction control . The digestion and absorption of proteins, cellulose, pectin, and organic acids of animals are effectively improved by microbial degradation . Besides, large amounts of bacterial proteins have been also produced during the process, which can counterpoise the amino acid contents of the hemoglobin hydrolyzate .…”

“…The digestion and absorption of proteins, cellulose, pectin, and organic acids of animals are effectively improved by microbial degradation . Besides, large amounts of bacterial proteins have been also produced during the process, which can counterpoise the amino acid contents of the hemoglobin hydrolyzate . Therefore, fermented blood exhibits significant priority over crude blood from the aspect of amino acid balance, digestibility, palatability, and economic efficiency .…”

“…Therefore, fermented blood exhibits significant priority over crude blood from the aspect of amino acid balance, digestibility, palatability, and economic efficiency . Nevertheless, bioconversion efficiency is often not ideal because of the substrate inhibition and feedback inhibition effects . To further reduce hemoglobin bioconversion costs, a variety of methods have been suggested for increasing hydrolysis yields, such as gradual substrate loading , advanced reactor configurations coupled with product removal to avoid inhibition , and surfactant addition .…”

OPTIMIZACIÓN DE LA HIDRÓLISIS ENZIMÁTICA DE PROTEÍNAS PRESENTES EN SEMILLAS DE GUANDUL (Cajanus cajan)

“…En esta representación se observan líneas circulares o también conocidos contornos, que permiten visualizar diferentes valores de respuesta debido a cambios sobre los factores, al igual que en el gráfico de superficie de respuesta al relacionar la concentración de enzima con el tiempo de reacción, se observa que el contorno para el mayor grado de hidrólisis de proteínas presentes en semillas de Guandul se muestra cuando tenemos el mayor tiempo de reacción y la máxima cantidad de enzima respecto al sustrato, la influencia de estos factores ya fue discutida anteriormente [31,32].…”